>> reporter: well, the turkish government has squarely placed the blame on syrian government forces. and they have some evidence to back that up, john. because this border town had been hit by syrian government artillery, the turkish government says, last week. they actually filed a formal complaint at the united nations about that. even though there were no -- there were no casualties as a result of that incident. it's also important to note, it's not the first time syrian forces have fired into turkey. it happened at another border point, with a police officer from turkey, hit in a refugee camp by gunfire coming from syria. if the turks don't respond, the government is going to look quite weak in the eyes of many turks, particularly in the border region. turks who are very worried about their own safety right now after five turkish citizens were killed. john? >> intense, volatile, dangerous border. thank you, ivan watson, for monitoring it for us this morning. thanks, ivan. >>> it is 18 minutes past the hour. the meningitis outbreak first reported in tennessee has now spread to fiv